Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP6576178ApriorityCriticalpatent/JPS5415455A/en
Publication of JPS5415455ApublicationCriticalpatent/JPS5415455A/en
Butt Welding And Welding Of Specific Article
(AREA)
Abstract
PURPOSE: To accomplish a accurate rolling of guide grooves on the surface of a drum shell by contorlling the rise in weld hardness of the butted section in form ing a drum shell by butt-welding steel plate.
COPYRIGHT: (C)1979,JPO&Japio
JP6576178A1978-06-021978-06-02Method of producing drum having guide groove
PendingJPS5415455A
(en)